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Audio Power Amplifiers | NCP4894
概览
NCP4894 是一款差分音频功率放大器，适用于便携式通信设备应用。NCP4894 的绝佳音频特性是手机等应用中优质声音的保证。NCP4894 的失真小于 0.01% (THD+N)，能够基于 5.0V 电源向 8.0Ω 负载提供 1.0W 的连续平均功率，在 2.6V 电源下仍然能够提供 250mW。NCP4894 提供优质音频，所需外部组件很少，功耗极低。它具有极低功耗关断模式。为了实现灵活性，关断可通过逻辑高电平或低电平启用，具体取决于 SD 模式引脚上的应用电压。NCP4894 包含的电路可防止开关转换器期间的“杂音”。为了实现最大灵活性，NCP4894 提供外部控制的增益（通过电阻）以及外部控制的开启时间（通过旁通电容器）。由于其卓越 PSRR，可以直接联接电池，不必使用 LDO。此器件采用 9 引脚触发器 CSP、Micro10 和 DFN 3x3 mm 封装。
- Audio Amplification
- Mobile Phones
- PDAs
- Differential Amplification
- Shutdown High or Low Selectivity
- 1.0 W to an 8.0 load from a 5.0 V Power Supply
- Superior PSRR: Direct Connection to the Battery
- Pop and Click Noise Protection Circuitry
- Ultra Low Current Shutdown Mode
- 2.2 - 5.5 V Operation
- External Gain Configuration Capability
- Thermal Overload Protection Circuitry
- External Turn-on Time Configuration Capability
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NCP4894DMR2G
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NCP4894FCT1G
Obsolete
Pb
A
H
P
Flip-Chip-9
1
260
DSFTP
3000
N
AB
1.8
5.5
Differential
140
0.01
1.9
20
Price N/A
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NCP4894MNR2G
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